using CScript.Utilities;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System;
using System.Runtime.InteropServices;
using System.Threading;
using CScript.Net;
using CScript.App;
using System.IO;

namespace CScript.Quick
{
    public class QuickManager : MonoSingleton<QuickManager>
    {
        public PackageHandler packageHandler = new PackageHandler(null);

        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
        public delegate int OnNewConnCallbackDelegate();
        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
        public delegate int OnReadCallbackDelegate(IntPtr ptr, int ptrLen, int ptrIndex);
        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
        public delegate int OnConnClosedCallbackDelegate();
        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
        public delegate int OnLogCallbackDelegate(float plr);
        [DllImport("ClientDll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, EntryPoint = "QuicConnect")]
        private static extern IntPtr QuicConnect(string alpn, string H, string s,
           OnNewConnCallbackDelegate onNewConnCb, OnReadCallbackDelegate onReadCb, OnConnClosedCallbackDelegate onConnClosedCb, OnLogCallbackDelegate onLogCb);

        private Thread _quickThread;
        private int _rcvBufLen = 0;// 测试的一个属性

        private int _quickReturnValue = 0;
        private string _IPPort;

        const int DEF_RECV_BUFFER_SIZE = 409600 * 2;
        private MemoryStream _receiveBuffer = new MemoryStream(DEF_RECV_BUFFER_SIZE);

        public void Init(string ip,string port)
        {
            _IPPort = ip.ToString() + ":" + port.ToString();
            if (_quickThread == null || !_quickThread.IsAlive)
            {
                _quickThread = new Thread(StartQuick);
                _quickThread.Start();
            }
        }

        void StartQuick()
        {
            Debug.LogWarning("StartQuick");
            QuicConnect("echo", "www.example.com", _IPPort,
                 OnNewConnCallBack,
                 OnReadCallBack,
                 OnConnClosedCallBack,
                 OnLogCallBack
                 );
        }

        private int OnNewConnCallBack()
        {
            Debug.Log("c# OnNewConnCallBack");
            NetDistribute.Instance.OnConnect(true, "success");
            return 0;
        }

        private int OnReadCallBack(IntPtr ptr, int ptrLen, int ptrIndex)
        {
            //byte[] buf = new byte[ptrLen];
            Marshal.Copy(ptr, this._receiveBuffer.GetBuffer(), 0, ptrLen);
            this.packageHandler.ReceiveQuicData(this._receiveBuffer.GetBuffer(), 0, ptrLen);

            //string bufStr = System.Text.Encoding.ASCII.GetString(buf);

            //_rcvBufLen += ptrLen;

            //Debug.Log("c# OnReadCallBack bufLen=" + ptrLen.ToString() + "，rcvBufLen=" + _rcvBufLen.ToString());
            ////Console.WriteLine(bufStr);

            //if (_rcvBufLen >= 442275)
            //{
            //    Debug.Log("c# OnReadCallBack 主动关闭quic连接");
            //    return 10;// return 10表示关闭quic建立起来的连接
            //}

            return _quickReturnValue;
        }
        private int OnConnClosedCallBack()
        {
            Debug.Log("c# OnConnClosedCallBack");
            this._receiveBuffer.Position = 0;
            this._receiveBuffer.SetLength(0);
            this.packageHandler.Reset();
            NetDistribute.Instance.OnDisconnect(0,"success");
            return 0;
        }

        static int OnLogCallBack(float plr)
        {
            //Debug.LogWarning("c# OnLogCallBack " + plr.ToString());
            return 0;
        }

        public void Close()
        {
            _quickReturnValue = 10;
        }
    }
}